Wrench.



No. 808,954. PATENTED JAN. 2, 1906. H. T. THOMPSON.

WRENCH.

APPLICATION PELED SEPT. 20,1904.

J4 J6 W 2 Jfimlz'u 27720772260 itnesses nventon Httomegs 1 Z5 E 5 b8UNITED STATES PATENT OFFICE.

HAMLIN TAYLOR THOMPSON, OF FLOVILLA, GEORGIA, ASSIGNOR OF ONE-HALF TOWILLIAM D. GIBSON, OF FAYETTEVILLE, GEORGIA.

WRENCH.

Specification of Letters Patent.

Patented Jan. 2, 1906.

To aZZ whom it may concern.-

Be it known that I, HAMLIN TAYLOR THOMP- soN, a citizen of the UnitedStates, residing at Flovilla, in the county of Butts and State ofGeorgia, have invented anew and useful Wrench, of which the following isa specification.

This invention relates to wrenches of-the class known as quick-action,and has for its object to simplify and improve the construction andincrease the efficiency of implements of this character.

With these and other objects in view, which will appear as the nature ofthe invention is better understood, the same consists in certain novelfeatures of construction, as hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, andin which corresponding parts are denoted by like designating characters,is illustrated the preferred form of embodiment of the invention capableof carrying the same into practical operation, it being understood thatthe inventlon is not necessarily limited thereto, as various changes inthe shape, proportions, and general assemblage of the parts may beresorted to without departing from the principle of the invention orsacrificing any of the advantages of the invention within the scope ofthe appended claim.

In the drawings thus employed, Figure 1 is a side elevation with aportion broken away to expose the interior construction. Fig. 2 is atransverse section on the line 2 2 of Fig. 1. Fig. 3 is a perspectiveview of the locking-block and its resilient supporting-arm detached.

The improved implement comprises a stock' 10, having at one end a handle11 and with a stationary jaw 12 extending laterally from the other endand with spaced serrations or teeth 13 upon one side of the stock. Themovable aw 14 is formed with spaced sides 16 17 extending upon oppositesides of the stock 10 and projecting rearwardly of the same, with a cam25 pivoted at 24 between the projecting ortions. Slidably disposedbetween the si cs 16 17 is a block 18, having teeth 19 upon one face forengaging the teeth 13 of the stock and with guide-ribs 2O 21 at the endsbearing over and beneath the side portions.

The cam 25 when in its activejposition compresses the block 18 intoengagement with the stock 10, and thus locks the jaw 14 at any desiredpoint upon the stock.

Depending from the jaw 14 is a brace-arm 27 upon the lower end of whicha band 15 is formed and extending around the stock 10, the band beingthus spaced for a considerable distance from the jaw 14.

The jaw 14, its spaced sides 16 17, the brace-arm 27, and the band 15are preferably integral and cast from a single piece of metal,preferably steel.

A spring 22 is connected at one end to the block 18 and at the otherend, at 23, to the band 15 and operating to maintain the block 18 freefrom the teeth 13 of the stock 10 when the cam is in withdrawn position.By this arrangement the block 18 and its operatingcam 25 are disposed inlongitudinal alinement with the movable jaw 14 and the band 15 disposedfor a considerable distance below the jaw, so that the pressure appliedto the jaw 14 when using the wrench causes the.

block 18 to be drawn forcibly against the rear or toothed side of thestock, and the greater the pressure the greater the grip, as will beobvious.

The brace 27 and band 15 by their position effectually resist anytendency to lateral movement or twisting of the movable jaw and alsosupport the movable jaw and relieve it largely from the strains to whichit would otherwise be subjected. Thus the strength and durability of theimplement are materially increased without increase in weight or expenseof construction.

By this simple arrangement it will be ob vious that when the lever-camis thrown outward the spring-arm 22 will immediately move thelocking-block outward and release the movable jaw and permit the lattertobe quickly adjusted to any desred extent, and when the adjustment iscompleted a simple movement of the cam-lever will firmly lock themovable jaw in its new position.

The device can be constructed in any desired size and of any suitablematerial.

A stop-pin 26 will be inserted in the stock 10 to limit the movement ofthe jaw 14 Having thus described the invention, what is claimed is- Awrench consisting of a stock having spaced teeth in the rear face andwith a handle at one end and a laterally-extending jaw at the other end,a movable jaw having spaced sides extending rearwardly of the same andslidably disposed upon opposite sides of the stock and projectingrearwardly of the same, a brace member depending from said movable jaw,a band extending from said brace member and inclosing said stock, ablock slidably disposed between the spaced sides of said movable jaw andwith guide-ribs bearing above and below said sides, said block havingspaced teeth for engaging the teeth of said stock, a cam pivoted betweenthe projecting portions of the spaced sides of said movable j aw, andaspring connected to said block and operating to maintain the same 15yieldably out of engagement with said stock when released by thewithdrawal of the cam.

In testimony that I claim the foregoing as 'my own I have hereto allixedmy signature in the presence of two witnesses.

HAMLIN TAYLOR THOMPSON. Witnesses:

J. L. HERRING,

J. H. HAM.

